Radio3 0.53 has a simple API

This is an advanced technical feature, primarily for developers at this time.

What if you want to hook your Radio3 flow into a service that we don't have built-in support for? You can always use the RSS feed to make the connection, but then you have to poll the feed to see when it updates. That seems inefficient.

So there's a new feature in 0.53 that allows you to specify the URL of a service that we will ping whenever the RSS feed updates. It sends along one parameter, the URL of the feed.